I shall replace the salesman after discovering that a salesman is receiving kickbacks from my largest customer, analog concerns.
Answer: Option A
Step-by-step explanation:
In the above mentioned scenario, the salesman is given a kickbacks - "advantages" for either the good relationship that they have maintained with the client or for luring them to always provide them the product/service with discounts.
So in this situation I would obviously replace the salesman because such situations cannot be ignored and there is no assurance that the salesman will not take kickbacks henceforth. And asking for a cut is ethically wrong as the salesman getting the kickbacks.